41 lines
1.1 KiB
Python
41 lines
1.1 KiB
Python
# Copyright 2024 Bytedance Ltd. and/or its affiliates
|
|
#
|
|
# Licensed under the Apache License, Version 2.0 (the "License");
|
|
# you may not use this file except in compliance with the License.
|
|
# You may obtain a copy of the License at
|
|
#
|
|
# http://www.apache.org/licenses/LICENSE-2.0
|
|
#
|
|
# Unless required by applicable law or agreed to in writing, software
|
|
# distributed under the License is distributed on an "AS IS" BASIS,
|
|
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
# See the License for the specific language governing permissions and
|
|
# limitations under the License.
|
|
"""
|
|
Base class for a critic
|
|
"""
|
|
from abc import ABC, abstractmethod
|
|
|
|
import torch
|
|
|
|
from verl import DataProto
|
|
|
|
__all__ = ['BasePPOCritic']
|
|
|
|
|
|
class BasePPOCritic(ABC):
|
|
|
|
def __init__(self, config):
|
|
super().__init__()
|
|
self.config = config
|
|
|
|
@abstractmethod
|
|
def compute_values(self, data: DataProto) -> torch.Tensor:
|
|
"""Compute values"""
|
|
pass
|
|
|
|
@abstractmethod
|
|
def update_critic(self, data: DataProto):
|
|
"""Update the critic"""
|
|
pass
|